Air-pump or inflator.



No. 896,933. I PATENTED AUG. 25, 1903. F. s. NIGKELLS. AIR PUMP 0R INFLATOR,

APPLICATION-FILED MAY 4, 1907.

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F. S. NIGKELLS.

AIR PUMP OR INPLATOR. APPLIOATION FILED MAY 4, 1907.

2 SHEETS-SHBET 2.

FIG. 10.

of the pump or ini'lator.

FREDERIGIL SEPTIMUS NIGKELLS, OF LONDON, ENGLAND.

AER-PUMP OR INFLATOR.

.Specification of Letters fPatent.

Application filed May 4, 1907.

ratntednu as, 190a,

Serial No. 371,842.

air in the tire.

The invention is also applicable for other purp where it is desired to make an air tight connection or union when. forcing air under pressure and at the same time register or indicate the pressure of air in the article into which air is being forced.

The invention is illustrated upon the accompanying drawings, in which-- F igure 1 is a front view of a connection. or

.- union. Fig. 2 is a sectional view of Fig. 1

slioiving a portion of the tubing by which the union or connection is attached to the pump or inllator. Fig. 3 is a similar view to Fig. 1 showing the clip portion of the connection or union with two jaws only. 4 is a sectional veiw of Fig. 3 showing a portion of the flexible tubing as shown by Fig. 2. Figs. 5 and o are sectional viows'showing modiiiml forms of the union or connection. Fig. .7 is a front view and F S a sectional view of same showing a further modified form of the union or connection. Fig; 9 is a front view of a combined connection or union and register or indicator. Fig. 10 is a sectional iew oi Fig. 9. Fig. 11 a similar view to Fig. it) slightly modified. Fig. 1.2 is a part sectional view showing a register or ind :ator formed with the bottom portion Fig. 13 is a part sectional view of an indicator or register for attaching to the end of a pump or inflator.

In carrying this invention into practice I provide small chamber 1 having'a branch inlet 2 to which the ilexiblc connection 3 of a pump or i nllator is secured. Fitting into the outlet oi this chamber is a rubber plug or cushion d or equivalent,having a small bore I or hole which may taper inward if desired shown by Fi 2. This chamber 1. fits bocen the bowed portion oi a clip or connectl de .ce 5 made of spring steel, or metal reinforced with a flat spring. The ends of this clip are bent inwards to form jaws 6, '7, sullicient metal being left on the one jaw to allow it to be bent over to form a socket into which the jaw 6 fits as clearly shown by 1. The chamber 1 is fixed onto or secured to the turned over part or third aw 8, the bore or outlet of the said cham er fitting over an opening formed in the said jaw 8. Corresponding holes or openings, suificiently large to enable the stem of a valve to pass freely through, are also formed in the jaws 6 and 7.

To fit the connection or union on to a valve stem, the bowedportion of the clip-5 is com-.

pressed until the hole in the jaw 6 coincides valve stem will then free y pass through these holes and bed against the rubber plug 4, and on releasing the bowed portion oi. the clip the jaws will spring apart, thereby firmly griiping the valve stem and making a perfectly air tight connection between the valve and the pump or inl'lator.

At Figs. 3 and 4 I have shown the spring clip 5 with two jaws 6, 7 only. In this case the chamber 1 is attached to an independent cross piece or base 9 which embraces the edges or sides of the jaws and forms a kind of socket into which the jaws fit.

In the modification shown by Fig. 5 in stead of inserting the rubber plug or cushion 4 by way of the outlet, into the chamber 1, I form a hole in one end of the chamber through which the plug or cushion 4 is inserted. A cap or cover 10 screws into and seals this. .opening. The branch inlet 2 screws into the opposite end of the chamber 1 and the plug or cushion 4 is provided with an outlet communicating with the outlet in the chamber as clearly shown.

At Fig. 6 I have shown the chamber 1 made in two parts. The upqer portion screws into the lower portion an bears upon a rubber washer 0r cushion 4 provided with a small opening resting upon the independent cross piece or base 9. he stem of the valve beds against this washer when the connection is fitted on to the valve.

In the modification shown by Figs. 7 and 8 I havemade the chamber 1 detachable or loose resting upon a rubber disk or cushion 4.

This diskor cushion rests upon the cross piece 9, and on one side of this cross icce suilicient metal is left to bend over and orm the loop 1.1, the end being connected by 

